Ski hat



FIG. 1 is a front view of a ski hat laid flat showing my new design;

FIG. 2 is a front perspective view of the design;

FIG. 3 is a left side perspective view of the design; and,

FIG. 4 is a rear perspective view of the design.

The long-short-short broken lines forming a rectangular shape in FIGS. 1 and 2 are environmental matter and form no part of the claim. 

The ornamental design for a ski hat, as shown and described. 